TRINX TRINX sports bicycle, size 27, aluminum 1 High-quality design 2 Shimano Japanese gears, 7 rear 3 Shimano Japanese gears, 3 front 4 Disc brakes 5 Lightweight and durable sporty aluminum frame 6 The front wheel is detachable for easy maintenance and assembly -Trinx bicycle frames are made of aluminum or carbon, making the bicycle light and easy to control.👌 -Trinx bicycles offer a precise and smooth gear system with a large number of speeds for easy control on slopes and different terrains.💥 -Equipped with effective braking systems that give the cyclist a sense of security at high speeds.🚴 -Thin tires help reduce friction with the road, increasing the bicycle's speed.👍